Machine tool slide and lubricator



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` 5 1935- J. R. JoHNsoN Re. 19,448

MACHINE TOOL SLIDE AND-LUBRICATOR THEREFOR original Filed March 19, 19312 sheets-sheet 1 fils.

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Feb. 1,935.

E.) S Si w MJHNQ Reuma Feb'. 5, 1935 Re.v 19,448

John R.. Johnson, Rockford,l Ill., assignor to The Ingersoll MillingMachine Company, Rockf ord.

lll., a corporation of Illinois original No. 1,903,865, ama Api-111s,193s, seri No. 523,793, March 19, 1931. 'Application for reime Decembers. 1934, sei-ua No. 155.838

8 Claiml.

The present invention relates in general to machine tools and hasparticular reference tol machine tool slide and lubricator therefor.

One object of the invention is to provide an improved machine tool slideor ways on which a table or other machine tool part is mounted forreciprocationor other sliding movement. I Another, object of theinvention' is to improve the lubricating facilities for machine tool4slides whereby a preponderance of lubricant lcan be distributed over thevslide or ways in such quantities as'to flood the ways so that they willbeV substantially submerged for all practical purposes.

With these and other objects in view, the invention will be more readilyunderstood uponA reference to the accompanying drawings which have beenselected for the purpose of illustrating the application of theinvention.

` In said drawings, Figure 1 is a view in perspective of a portion of amilling machine table :1nd bed, showing an application of the inven-Figure 2 is avview in cross section of a milling machine table and bedwith the invention applied thereto; F1riigureSisasectiontakenontheline3-3,

2; Y Figure 4 is a detail view in section. Figure 5 is av detail.viewin` perspective and 'partly in section; and f Figure 6 is a detail viewof another form of A:um drain- Referring now to the drawings indetail,5repre sents va milling machine bed upon which the table l 6 ismounted for reciprocal movement. The bed 5, to accommodate the table forsuch reciprocal movement, is made with spaced parallel ways or slides 'Iand 8 each of which being formed at Vthe bottom of a trough-likestructure. At the end of each of these troughs are pans 9 and 10 whichare deeper than the troughs. Slidably mounted-in these troughs Aare -theways ll and 12 of the table 6, suitable gibbing 13 being provided forone of the troughs as shown.

Each of the table ways 11 and 12 is made with a closed ended "lubricantdistributing reservoir 14 and a shoe i5 made of bronze, brass or othermaterial suitable for the purpose, is dove-tailed upon-'the bottom ofthe table ways. These shoes becomev the contact surface'on the tableways which slide.- along the bed ways 7 and 8 and in intimate contacttherewith, and'itis these contacting surfaces, which the lubricatingfacilities provided, serve. Iii Order to supply a preponderance oflubrlf (ci. m-m 'f cant to these contacting surfaces in sui'ilcientquantity so that they will always be flooded and submerged, the shoes l5are each formed with a series of lubricant supply ducts 16 at spacedintervals inthe length of the shoes. The'se d ucts 16 communicate withthe distributing reservoirs 14 and terminate in wiping relation with thebed ways 7 and 8. To better distribute thelubricant. the undersides ofthe shoes 15 are scored with distributing channels or grooves 17 whichcrisscross the undersides of the shoes and intersect at the ducts 16. Inthis way eachl duct is thus equipped with a cluster-like plurality ofdistributing grooves which extend diagonally across the surface of theshoes and up the side edges thereof as at 16'. By means of the grooves16' in the edges of the shoes, suiliclent lubricant is directed to thesides of the ways to lubricate the same. In this connection these edgegrooves 16' communicate with the clearance spaces 16. Felt pads '|30'are also inset in the clamps 30 to absorb the lubricant forced into theclearance spaces 16', and these pads serve to keep the top side of thebevels wet with lubricant. On the opposite or straight side of the waysthe lubricant will be forced between the contacting side surfaces insufficient` quantity to assure the desired lubrication.

lg'he distributing reservoirs 14 serve in the ca- Apacity of sub-sourcesof supply for the lubricant and they are in turn supplied with lubricantin sufdcient quantity to keep them completely lled and under pressurefrom a main source of supply comprising the sump-like receptacle 18.From this sump-like receptacle, the lubricant is pumped .into thedistributing reservoirs 14 by a pump 19 which has an intake 20terminating adjacent the bottom of the sump 18, and an outlet V21 lwhichis connected with a pipe 22. The pipe 22 is equipped with an L-iltting23 to supply a branch pipe 24 leading to one of the reservoirs 14; andthe other pipe section 25 which joints the L-23 leads-to the otherreservoir. The ends of these pipes 24 and 25 are preferably threaded asat 26 and 27 intoopenings formedin they thickness of the b'ed ways '1and 8 so as to establish a communication with the bearing surfaces onthe ways. These openings,y one for each of the ways 7 and 8, arepreferably formed interme` diate the ends of the ways/and arealignedwith the distributing ducts 16 so that as the table reciprocates, theducts 16 will successively register with these openings and 'make andbreak a regis-- tering communication between the reservoirs .14

and the supply pipes 24 and 25. Since the pump 19 is runningcontinuously, there is always a head of lubricant under pressure in thepipes 24 and 25, and each time one of thel ducts registers with theopenings in the bed ways, a quantity of lubricant will be forced underpressure into 'the 'distributing reservoirs 14.A In this way, thediscapacity of these pipes 28 can be predetermined v so as to maintainthe desired lubricant level on the Ways and in the pans 9 and 10;consequently,

not only are the supporting surfaces of the ways thoroughly lubricated,but also the sides of the troughs 7 and 8 where the table ways 11 and 12l contact are also thus lubricated.

If desirable, the return pipes 28 may communicate with the pans 9 and 10at a height as shown in Fig. 6 to maintain a desired level on the ways.Ii this is resorted to, it will not be necessary to reckon their returncapacity.

Tm addition tc 'the giclcing 13, the Ways are also equipped with clampsand :lo which are of beveled s sans l moe clamps a @Ming spaces 353 openat under' the table. These ie coolant to over sides of the tabi andallor new o the par l At., ion is ca. d to the tact, since the bed a eformed by machining the material from which the bed is cast since theunder side of the table ways are equipped with a shoe of a differentmetal, such as brass or bronze, there are two different metals bearingagainst each other, which of course, goes to make up a desirable qualityof bearing. Furthermore, since the contacting surfaces of these twometalsare constantly being flooded, any particles which may get on thebearing surfaces quickly be washed away as the table reciprocates. lsuit# able filter may be installed in the lubricant supplir so thatclean oil will be supplied to the ways at all tiries.v

En addition tc the foregoing features, atten= tion is also called to thedetails of construction Yoi the bed 5. For all practical purposes, thebed 5 comprises a one-piece casting having a base with side wallsmerging into a relatively thiol; web portion, on ,one side of which arethe cooling iiuid collecting troughs 32 and 33, and on the other sideare the trough-like Ways 7 and 8. Connecting the trough-like ways 'l and8 is an `intermediate center depression which provides ample clearancefor the rack 36. The design of this bed provides a very compact`arrangement for the diierent structural parts which make up the whole.y

Having thus described and shown an embodiment of this invention, what Iclaim and desire to secure by Letters Patent of the United States 1. Amachine tool slide construction and lu-l bricator therefor, comprising atrough-like slide on one machine part having an opening in the tablish acommunication between the reservoir and the ways to be lubricated, saidopenings also successively establishing a communication between thereservoir and the opening in the troughs like slide when the slidablymounted Ways slide in the trough-like ways; whereby the reservoir isintermittently supplied with lubricant.

2. In a machine tool, the combination of a plurality of slides, one ofwhich is supported by another, a lubricant distributing reservoir in oneof said slides, a slide shoe enclosing said raser7s voir having aplurality of lubricant ducts in its thickness for distributing`lubricant to said slides, and means for keeping said reservoir filledwith lubricant under pressure.

3. 1n a machine tool, the combination of a bed and table, slides on thebed and ways on the table to slide' on said bed slides,v and means forthe contacting bearing surfaces between the slides and Ways, comprising, a forced iced lubricant supply including branch. pipes, each branchcommunicating with opening fori'n i in the thickness of each. bed ottonieach of the table enclosing a lubricant dls= armed in 'the ways and saidthe te l rooa"ono successively regis c in with the openings brisant intoraser lubricant supply and the reservoirs the contacting bearingsurfaces bet. on ne slides and ways through the openings shoes.-

fi. Means for lubricating the slide etween. chine tooi parte, comprisinga lubricant reses voir inane of said parts having a series of lunbrisant discharge ducts in open communication.

with the slide, a vsource of lubricant supply under pressure, comprisinga delivery pipe tei iinate ing with an open end in said slide; wherebythe delivery ducts or" the reservoir will successively register Awithsaid delivery pipe and ntain a gli supply oi? lubricant in saidreservoiriinder preswhich a pipe returns the lubricant collected in thepan to the source of lubricant supply.

6. A machine tool slide construction and lubricator therefor, comprisingways on one machine part having an opening in the thickness thereof incommunication with a source of lubricant supply, ways on another machinepart mounted to' slide on said first named ways, a lubricantdistributing reservoir in said second named machine part having a seriesof openings communicating with the Ways on said rst named machine partto establish communication between said reservoir and the ways on saidfirst named machine part, said openings also successively establishing acommunication with said source of lubricating supply when the secondnamed machine part slides; whereby the reservoir is intermittentlysupplied with lubricant.

'7. In a machine tool organimticn, the combination of a supportproviding an elongated guideway, means providing a source o! lubricatingiluid under pressurecommunicating with an opening in said guideway, areciprocable member slidable along said guideway and closing said`opening, and a reservoir in said member communi-.- cating with a portopening toward said guideway and positioned to register with saidopening in' B. In a machine tool organization, the combi' nation of asupport providing an elongated guideway. means providing a source oflubricating fluid under pressure communicating lwith an opening in saidguideway, a reciprocable member slidable in said gluideway and closingsaid opening, a reservoir 'in said member communicating with a portopening toward said guideway andpositionedtoregisterwithsaidopeninginatleast one-position oi' the memberwhereby. to permit fluid from said'souree to ilow into the reservoir,and a plurality of ducts spaced along said member and establishingcommunication with said reservoir and the surface of said guideway fordistributing the duid to the latter.

JOHN R. JOHNSON.

